Two guys rubbing dicks is male/male, but does not involve either of them penetrating the other. One guy giving another a handjob is male/male, but does not involve either penetrating the other. The same can be said of tailsex between two guys, a guy giving another guy a footjob, and plenty of other things. PLUS, male/male is not exclusively for sex between two guys in the first place, two guys on a date, kissing, hugging in a non-platonic way, holding hands, or otherwise doing anything romantic with no sex involved, all also count as male/male.